II Field Force, Vietnam

II Field Force, Vietnam was a United States Army Corps-level command during the Vietnam War.

II Field Force, Vietnam
II Field Force Vietnam SSI.svg
II Field Force, Vietnam shoulder sleeve insignia
Country United States of America
Allegiance United States Army
Part ofPatch of Military Assistance Command, Vietnam.png Military Assistance Command, Vietnam
HeadquartersLong Binh
EngagementsVietnam War
Julian Ewell
Distinctive unit insigniaII Field Force Vietnam DUI.gif

Activated on 15 March 1966, it became the largest corps command in Vietnam and one of the largest in Army history. II Field Force was assigned the lineage of the XXII Corps, a World War II corps in the European Theater of Operations. II Field Force was a component of U.S. Military Assistance Command Vietnam (MACV) and had its headquarters in Long Binh.

Area of responsibilityEdit

II Field Force Vietnam HQ, Long Binh Post, 27 September 1967

II Field Force's area of responsibility was III Corps Tactical Zone, later renamed Military Region 3, which comprised eleven provinces surrounding Saigon. This was designed to mimic the ARVN III Corps region. II Field Force controlled units participating in the 1968 Tet Offensive and the 1970 Cambodian Incursion.

Units assignedEdit

At various times during the Vietnam War, II FFV controlled the following units:

II Field Force Vietnam Headquarters Elements:


II Field Force was de-activated on 2 May 1971, during the withdrawal of U.S. ground combat forces from Vietnam, with its assets providing the basis for its successor, Third Regional Assistance Command (TRAC).




  • Leepson, Marc; Hannaford, Helen (1999). Webster's New World Dictionary of the Vietnam War. New York: Simon & Schuster. ISBN 0028627466.
  • Stanton, Shelby, Vietnam Order of Battle, ISBN 0-89193-700-5